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杨树湿心材在湖北省发生普遍，危害严重。据在湖北省嘉鱼县的调查，9个品种的病株率都达100％，胸径部位的变色直径占胸径的31．38％～64．35％；变色面积达5．49％～42．31％，严重影响杨木的生产、加工利用及其产品的质量。杨树湿心材在1a生杨苗的插穗部就已形成，此病可能从插穗的剪口或根部的伤口侵入，沿髓心扩展至主干，髓心首先遭到破坏，然后是心材的木质部变色。
Poplar wet heartwood occurs generally in Hubei Province, endangering serious. According to the survey in Jiayu County, Hubei Province, the rate of diseased plants in all 9 varieties reached 100%, the diameter at the diameter at breast diameter accounted for 31.38% ~ 64.35% of the diameter at breast height, and the color change area reached 5.49% ~ 42. 31%, seriously affecting poplar production, processing and utilization of the quality of their products. Poplar wet heartwood seedlings in 1a larvae had cuttings Department has formed, the disease may cut from the cuttings or roots wound intrusion, along the medullary expansion to the trunk, first pith was damaged, and then the xylem discoloration of the heartwood .